root / lab4 / mouse.c @ 71
History | View | Annotate | Download (3.27 KB)
| 1 | 59 | up20180642 | #include <lcom/lcf.h> |
|---|---|---|---|
| 2 | |||
| 3 | #include "mouse.h" |
||
| 4 | |||
| 5 | #include "errors.h" |
||
| 6 | #include "kbc_macros.h" |
||
| 7 | #include "mouse_macros.h" |
||
| 8 | #include "kbc.h" |
||
| 9 | |||
| 10 | int (subscribe_mouse_interrupt)(uint8_t interrupt_bit, int *interrupt_id) { |
||
| 11 | if (interrupt_id == NULL) return NULL_PTR; |
||
| 12 | *interrupt_id = interrupt_bit; |
||
| 13 | if (sys_irqsetpolicy(MOUSE_IRQ, IRQ_REENABLE | IRQ_EXCLUSIVE, interrupt_id)) return SBCR_ERROR; |
||
| 14 | return SUCCESS;
|
||
| 15 | } |
||
| 16 | |||
| 17 | int got_error_mouse_ih = 0; |
||
| 18 | uint8_t packet[3];
|
||
| 19 | int counter = 0; |
||
| 20 | |||
| 21 | void (mouse_ih)(void) { |
||
| 22 | uint8_t status = 0;
|
||
| 23 | got_error_mouse_ih = 0;
|
||
| 24 | if(counter >= 3) counter = 0; |
||
| 25 | |||
| 26 | 68 | up20180642 | if ((got_error_mouse_ih = util_sys_inb(STATUS_REG, &status))) return; |
| 27 | 59 | up20180642 | |
| 28 | if (status & (TIME_OUT_REC | PARITY_ERROR)) {
|
||
| 29 | 68 | up20180642 | got_error_mouse_ih = OTHER_ERROR; |
| 30 | 59 | up20180642 | return;
|
| 31 | } |
||
| 32 | |||
| 33 | uint8_t byte = 0;
|
||
| 34 | |||
| 35 | 68 | up20180642 | if ((got_error_mouse_ih = util_sys_inb(OUTPUT_BUF, &byte))) return; |
| 36 | 59 | up20180642 | |
| 37 | /// This does not run if: I was expecting the first one but what I get is definitely not the first byte
|
||
| 38 | if((byte & FIRST_BYTE_ID) || counter){
|
||
| 39 | packet[counter] = byte; |
||
| 40 | counter++; |
||
| 41 | } |
||
| 42 | } |
||
| 43 | |||
| 44 | struct packet (mouse_parse_packet)(const uint8_t *packet_bytes){ |
||
| 45 | struct packet pp;
|
||
| 46 | pp.bytes[0] = packet_bytes[0]; |
||
| 47 | pp.bytes[1] = packet_bytes[1]; |
||
| 48 | pp.bytes[2] = packet_bytes[2]; |
||
| 49 | pp.rb = pp.bytes[0] & RIGHT_BUTTON;
|
||
| 50 | pp.mb = pp.bytes[0] & MIDDLE_BUTTON;
|
||
| 51 | pp.lb = pp.bytes[0] & LEFT_BUTTON;
|
||
| 52 | 71 | up20180655 | pp.delta_x = sign_extend_byte((packet_bytes[0] & MSB_X_DELTA) != 0, pp.bytes[1]); |
| 53 | pp.delta_y = sign_extend_byte((packet_bytes[0] & MSB_Y_DELTA) != 0, pp.bytes[2]); |
||
| 54 | 59 | up20180642 | pp.x_ov = pp.bytes[0] & X_OVERFLOW;
|
| 55 | pp.y_ov = pp.bytes[0] & Y_OVERFLOW;
|
||
| 56 | return pp;
|
||
| 57 | } |
||
| 58 | |||
| 59 | int (mouse_set_data_report)(int on){ |
||
| 60 | int ret = 0; |
||
| 61 | 69 | up20180642 | printf("L61\n");
|
| 62 | if((ret = kbc_issue_cmd(MOUSE_WRITE_B))) return ret; printf("L62\n"); |
||
| 63 | if((ret = kbc_issue_arg(DIS_DATA_REP))) return ret; printf("L63\n"); |
||
| 64 | uint8_t ack = 0;
|
||
| 65 | if((ret = kbc_read_byte(&ack))) return ret;printf("L65\n"); |
||
| 66 | printf("ACK: %x\n", ack);
|
||
| 67 | 59 | up20180642 | return SUCCESS;
|
| 68 | } |
||
| 69 | 70 | up20180655 | |
| 70 | int (mouse_read_data)(uint8_t *data) {
|
||
| 71 | int ret;
|
||
| 72 | if ((ret = mouse_issue_cmd(READ_DATA))) return ret; |
||
| 73 | if ((ret = mouse_read_byte(data))) return ret; |
||
| 74 | return SUCCESS;
|
||
| 75 | } |
||
| 76 | |||
| 77 | int (mouse_issue_cmd)(uint32_t cmd) {
|
||
| 78 | int ret;
|
||
| 79 | uint8_t ack = 0;
|
||
| 80 | while (ack != ACK_ERROR) {
|
||
| 81 | if ((ret = kbc_issue_cmd(MOUSE_WRITE_B))) return ret; |
||
| 82 | if ((ret = kbc_issue_arg(cmd))) return ret; |
||
| 83 | if ((ret = mouse_read_byte(&ack))) return ret; |
||
| 84 | if (ack == ACK_OK) return SUCCESS; |
||
| 85 | tickdelay(micros_to_ticks(DELAY)); |
||
| 86 | } |
||
| 87 | return INVALID_COMMAND;
|
||
| 88 | } |
||
| 89 | |||
| 90 | int (mouse_read_byte)(uint8_t *byte) {
|
||
| 91 | int ret = 0; |
||
| 92 | uint8_t stat; |
||
| 93 | for(int i = 0; i < KBC_NUM_TRIES; ++i){ |
||
| 94 | if((ret = util_sys_inb(STATUS_REG, &stat))) return ret; |
||
| 95 | if((stat&OUT_BUF_FUL) && (stat&AUX_MOUSE)) {
|
||
| 96 | if(stat & (PARITY_ERROR | TIME_OUT_REC)) return OTHER_ERROR; |
||
| 97 | if((ret = util_sys_inb(OUTPUT_BUF, byte))) return ret; |
||
| 98 | else return SUCCESS; |
||
| 99 | } |
||
| 100 | tickdelay(micros_to_ticks(DELAY)); |
||
| 101 | } |
||
| 102 | return TIMEOUT_ERROR;
|
||
| 103 | } |
||
| 104 | 71 | up20180655 | |
| 105 | int16_t (sign_extend_byte)(uint8_t sign_bit, uint8_t byte) {
|
||
| 106 | return (int16_t)(((0xFF * sign_bit)<<8) | byte); |
||
| 107 | } |